.gray_icon {
    -webkit-filter: grayscale(100%);
    -moz-filter: grayscale(100%);
    -ms-filter: grayscale(100%);
    -o-filter: grayscale(100%);
    filter: grayscale(100%);
    filter: gray;
}

.desc {
    text-align:center;
    margin-top:160px;
    margin-bottom: 60px;
}

.desc p {
    font-weight: 300;
    font-size: 16px;
    color: #666;
    line-height: 30px;
}

.desc .content a {
    padding: 0px;
    color: #555555;
    text-decoration: underline;
}

.desc a {
    padding: 0 10px;
    color: #01AAED;
}

.qq_login{
    margin-top:60px;
}

.logout_icon {
    margin-right: 10px;
}
